def test_db_record_created_without_consumer_id(self):
params = self.get_valid_request_params()
del params['tool_consumer_instance_guid']
with self.assertNumQueries(8):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
self.assertEqual(GradedAssignment.objects.count(), 1)
self.assertEqual(OutcomeService.objects.count(), 1)
def lti_launch(request, course_id, usage_id):
"""
Endpoint for all requests to embed edX content via the LTI protocol. This
endpoint will be called by a POST message that contains the parameters for
an LTI launch (we support version 1.2 of the LTI specification):
http://www.imsglobal.org/lti/ltiv1p2/ltiIMGv1p2.html
An LTI launch is successful if:
- The launch contains all the required parameters
- The launch data is correctly signed using a known client key/secret
pair
"""
if not settings.FEATURES['ENABLE_LTI_PROVIDER']:
return HttpResponseForbidden()
# Check the LTI parameters, and return 400 if any required parameters are
# missing
params = get_required_parameters(request.POST)
if not params:
return HttpResponseBadRequest()
params.update(get_optional_parameters(request.POST))
# Get the consumer information from either the instance GUID or the consumer
# key
try:
lti_consumer = LtiConsumer.get_or_supplement(
params.get('tool_consumer_instance_guid', None),
params['oauth_consumer_key']
)
except LtiConsumer.DoesNotExist:
return HttpResponseForbidden()
# Check the OAuth signature on the message
if not SignatureValidator(lti_consumer).verify(request):
return HttpResponseForbidden()
# Add the course and usage keys to the parameters array
try:
course_key, usage_key = parse_course_and_usage_keys(course_id, usage_id)
except InvalidKeyError:
log.error(
u'Invalid course key %s or usage key %s from request %s',
course_id,
usage_id,
request
)
raise Http404() # lint-amnesty, pylint: disable=raise-missing-from
params['course_key'] = course_key
params['usage_key'] = usage_key
# Create an edX account if the user identifed by the LTI launch doesn't have
# one already, and log the edX account into the platform.
authenticate_lti_user(request, params['user_id'], lti_consumer)
# Store any parameters required by the outcome service in order to report
# scores back later. We know that the consumer exists, since the record was
# used earlier to verify the oauth signature.
store_outcome_parameters(params, request.user, lti_consumer)
return render_courseware(request, params['usage_key'])
def test_graded_assignment_references_outcome_service(self):
params = self.get_valid_request_params()
with self.assertNumQueries(8):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
outcome = OutcomeService.objects.get(lti_consumer=self.consumer)
assignment = GradedAssignment.objects.get(
lis_result_sourcedid=params['lis_result_sourcedid'])
self.assertEqual(assignment.outcome_service, outcome)
def test_outcome_service_created(self):
params = self.get_valid_request_params()
with self.assertNumQueries(8):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
outcome = OutcomeService.objects.get(
lti_consumer=self.consumer
)
self.assertEqual(outcome.lti_consumer, self.consumer)
def test_no_duplicate_outcome_services(self):
params = self.get_valid_request_params()
with self.assertNumQueries(8):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
with self.assertNumQueries(2):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
outcome_services = OutcomeService.objects.filter(
lti_consumer=self.consumer)
self.assertEqual(len(outcome_services), 1)
def test_no_duplicate_graded_assignments(self):
params = self.get_valid_request_params()
with self.assertNumQueries(8):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
with self.assertNumQueries(2):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
assignments = GradedAssignment.objects.filter(
lis_result_sourcedid=params['lis_result_sourcedid'])
self.assertEqual(len(assignments), 1)
def test_graded_assignment_created(self):
params = self.get_valid_request_params()
with self.assertNumQueries(8):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
assignment = GradedAssignment.objects.get(
lis_result_sourcedid=params['lis_result_sourcedid'])
self.assertEqual(assignment.course_key, self.course_key)
self.assertEqual(assignment.usage_key, self.usage_key)
self.assertEqual(assignment.user, self.user)
def test_no_db_update_for_ungraded_assignment(self):
params = self.get_valid_request_params()
del params['lis_result_sourcedid']
with self.assertNumQueries(0):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
def test_no_db_update_for_bad_request(self):
params = self.get_valid_request_params()
del params['lis_outcome_service_url']
with self.assertNumQueries(0):
outcomes.store_outcome_parameters(params, self.user, self.consumer)
